Stenciling-machine.



PATENTED MAY 14, 1907.

E SHEETS-SHEET l.

Y [rn/M for B 0 STIGKNEY STENGILING HAOHINB. unicum! rum: mun. uns.

UNITED STATES PATENT OFFICE.

BURNHAM (l. STIUKNEY, lOl? ELiZABETll, vNEWT J ERSEY, ASSIGNOR T() UNUERWOD TYPEVVRTER COMPANY, Ol 1 NEW YORK, Y., A (()ltl)()l`i'l`l0\l UF .NEW JERSEY.

STENCILlNG-MAGHlNE,

Specification of Letters Patent.

Patented May 14, 190?.

Application iled July 11I 1906. Serial lic. 325,585.

To @ZZ whom, it nur?! concern.:

Be it known that l, BURNHAM C. S'rrcrnnr, a citizen of the United States, residing in Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful improvements in Stenciling- Machines, ol which the following is a specification.

This invention relates to that class ofdu plicating machines, in which a wax stencil is secured upon a rotatable cylindrical ink screen, and successive sheets of paper are pressed against the stencil by a yielding roll during the revolution of the cylinder and 'Y thereby steneiled; and particularly to that variety of stenciling machines in which the stencil cylinder and the pressure roll cooperate to form a for the leading edges of the paper sheets, and in which a stop arin is adjustable around the cylinder to deterniine the initial rotative position thereof, whereby the stenciled niatter can be caused to appear at any desired point upon the sheet.

It has been the practice to provide a stop which yields during the advance of the cylinder, but which is unyielding during the retraction of the cylinder, so that when the cylinder is rotated to stencil the sheet, it passes said stop at the com ietion of its revolution, and is then droppe back against the stop by the operator, thereby positioning the cylinder to receive the rst sheet of paper.

The principal object of my invention is to avoid the objections which exist to this method of positioning the cylinder, and to this end I provide a sto) which positively arrests the advance of t e cylinder' at the completion ol' its revolution, whereby the cylinder is positioned for the reception of the next paper sheet independently of any attention on the part of the operator, whoV has simply to turn the cylinder as Jar as it will go. l also provide means for yieldingly holding the cylinder against the stop, so as to prevent reooii of the cylinder when it strikes the stop. After the sheet is inserted the operator has simply to press a key, which is to release the cylinder from the control of the stop, so that it may make another revolution until again arrested b the stop. It is desired sometimes to give tllie cylinder several revolutions without printin and by this time both the stop and the yie ding dethe effect of vice are silenced by the saine device that casts oii the pressure roll, thus leaving the cylinder movable in either direction without obstruction.

In the accompanying drawings, Figure 1 is a side elevation illustratingr my improveniente appiied to a stenciling machine. Fig. 2 is a sectional plan showing details of the stop mechanism. Fig. 3 is a perspective of the parte seen at Fig. 1. Fig. 4 is another perspective of the mechanism showing particularly the pressure roll releasing device. ln the foregoing iigures the parts are shown in norrnal positions, the stencil cylinder being at its initial rotative position, and with the roll pressing against the cylinder. Fig. 5 shows 'the pressure roll released, and the cyl inder stop mechanism silenced.

A large cylindrical inlr screen 1 is suitably mounted for rotation, as for instance in the manner shown in the Kunath patent No. 82,695. The cylinder is rotated by means Vof a handle 2. projecting from an arrn 3,

adjustahly secured by thumb screws 4 to the rim 5 of the Ascreen 1. Upon its inner face said arm is formed with a lug 6. In the path of the lug is a stop 7 provided operi the end ofa lever arm 8 pivoted at 9 upon the framework 1U of the machine. The peper sheets ll are laid upon a feed-board 12 andY guided by a throat 13, 14, into the bite of the cylinder 1', and a pressure roll 15, the latter pressing the paper against the stencil sheet that is secured upon the cylinder 1, so that when the latter is rotated by the handle 2 inthe direction shown by the arrow the paper sheet 11 is drawn between the rolls and stenciled. At the completion of the revolution of the stencil cylinder, the lugY 6 thereon is arrested by the stop 7, so that the cylinder can advance no farther. By this time the stenciled paper 11 has been delivered from Y the machine, and a fresh sheet is inserted into the bite of the rolls.

Y In this'inanner the desired location or registry of the stenciled matter upon the sheet 11 Vis secured. If it be desired to stencil the matter either higher or lower upon the sheet 11, the stencil cylinder l must have a diierent initial position, and to this end the stop arm 3 is made adjustable around the rim 5 of the stencil cylinder, said arm being provided with claws 16 to catch over the inncr edge ol`r said rim, and being secured by the screws 1.

l'Vhen the sheet ll is properly adjusted within the bite ol' the rolls, a key 17, which is adjacent to the feed-bmird 12, is depressed, thereby pressing down an arm 18 belonging to the same lever as the arm S, and extending forwardly from the pivot U. By the depression of said key, the arm is lifted and stop 7 raised out of the path of the lug whereupon the handle 2 may be grasped, and the stencil cylinder advanced` as shown by the arrow to stencil the sheet 11; thc cylinder being arrested as before upon the completion of the revolution by means of the stop 7. The downward stroke of the key may be liniited by a stop 19, and the lever may be returned to normal position by a spring 20. The key 17 of course released, as soon as the cylinder begins to turn, so as to bring the stop 7 again in the path of the lug G.

I prefer to provide a detcnt 21 haviifg an inclined face, and pressed yieldingly by a spring 22 up against an inclined bottom face 23 of thedug 6 for the purpose of holding the latter yieldingly against the stop 7, so as to prevent recoil of the cylinder when striking said stop 7. The cylinder is thus held stationary during the insertion and adjustment of the sheet 11, and it is assured that stencils will strike in the same place on all the sheets. It will be understood that during the last part of the advance rotation of the stencil cylinder, the lug G strikes an inclined portion 24 on said detent and forces the same down out of the way, but that the detent immediately recovers itself and holds the cylinder steady at the point where it is arrested by the stop 7.

The cylinder may be retracted or revolved backwardly independently of the stop 7, since the latter may be provided with an inclined face 25 to be engaged by an inclined face 26 formed. upon the lug 6 during such backward rotation, whereby said stop 7 is lifted to permit the lug to pass thereunder; although if desired, the key 17 may be conveniently held down during successive backward rotations of the cylinder, so as to si* lence the stop 7, and in such case the beveled faces 25 and 26 may be dispensed with. It will also be understood that during the backward rotation of the cylinder, the lug 6 cnrages the inclined face 21 on the detent and forces the same down out of the wa f.

The pressure roll 15 is mounted by gudgeons 27 upon an open frame 128 hinged at its opposite ends at 29 upon the framework. The roll is releasably pressed up against the cylinder 1 by means of a cam 30, which is mounted upon a rock shaft 31 and. engages the under side of said frame to lift it. On the end of said rock shaft is `fixed an arm 32, which is turned to cause said cam to set 'up the pressure roll,l a latch 33 being provided to retain the arm 32 in its cll'ective position. By releasing thc latch, the arm Si! may spril'lg or be turned up to release the roll lo as seen at Fig. 5, the roll heilig shown by l'ull lines at Fig. l in elfettivc position, and by dotted lines in released position. llpon said rock shaft 3l, l mount a` cam lil to engage a spur .'35 formed upon th(` lever arm 1N, so that when thc roll is released, the cani .TH is turned and swings the spur 35 in a direction to lift thc stop 7 to incll'crtivc position, that is so that it will clear the lug (i, Fig. 5. Said cam has a llat side 3o against which said spur is normally pressed by the spring 2li, said llat side serving therefore as a stop for the lever. Upon said rock shaft, l also mount a ram 37 to engage an arm 35 provided upon the yielding detent 21, so as to simultaneously swing said detent out of the path of the lu f o, Fig. 5. Thus when the pressure roll is ieihased, the stop and detent are both silenced, and the stencil cylinder may be freely rotated in either direction, as is occasionally' desirable, as for instance when inking the same. Upon swinging the arm 32 back to effective position, lfig. 1, the springs 2() and 22 register the stop 7 and detcnt 21 to active positions.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others, as for instance, the detent 21 may be omitted; although I )refer to use it for the reasons given, and also because when the key 17 is depressed, the detent 21 may cani the cylinder forward. a little, thereby mechanically drawing the sheet 11 between the cylinder and the pressure roll, so that the position of the sheet in relation to the cylinder becomes fixed. before the operator grasps the handle 2, and hence liability of accidental disarrangement of the sheet is avoided the cam for this purpose being made of considerable length as illustrated, so as to impart a substantial movement to the cylinder.

Having thus described my invention, l claim:

1. In a stenciline machine, the combina tion with a rotatab e stencil cylinder having a handle, of a stop for arresting the cylinder to terminate its advance rotation, a linger pieve for releasing said. stop, and a yielding device tending to force the cylinder against said stop.

2. In a stcnciling machine, the combination with a rotatable stencil cylinder, of a stop for arresting the advance movement of the cylinder at the completion of its revolution, and a yielding ivoted arm to press said cylinder against sai stop.

3. In a stencilin machine, the combination with a rotatale stencil cylinder, of a stop for arresting the advance of the cylinder at the completion of its revolution, and a IOC) ISO

Spring deteit fnreed to yield hy Said Cylinder juet before the latter i5 arrested hy Said step, said det-eht heng whatwe tell te held the 1 Lvlinder against the step.

4. lh a teneiliug machine, the @enthielttien with a rotatable Steheil cylinder, nl u l Stop l' n1' arresting the advanee of the Cylinder l at the completion of its rex-fnlutiem n spring (latent forced tn vield is); said ey'linder just betere the latter is arrested hy maid Astep? Said detent heilig tconstrueled tn held the @vlinder against the stop, und means te release the cylinder from the control et the ln e, steueilingr maehing theJ enmlsihation with il rotatable slenell eylnder, nl a Stopior nrresting the advnnee nf the cylinder at the mnipleien et its revelutinn, a spring detent nree te yield by said e vlinder juSt helnre the latter arreetetl. by said stop, said detet heit; censtrueted tu lmld the cylinder againt the stop, and means tn releer-ie the eylinder from the eentrnl el the Stop, beth Said Step end said detent being eenstrueted to lire ln aside by the evliader during the retra tinrl thereof.

Vin e steheiling muehimi, the eumbinetien iaith a rotatable Steneil Cylinder, et an arm zu'ljuetzthly mounted thereon e-hd hai-*ingi u, lng? n. pix-rated arm ma the frarrxeteerl hav: ing a step to he engaged hy said lug te the advenee el' the cylinder at the eerrqalex tion el' its revolution, and a spring and stop ler said piveted step arm.

ln a stehe-lling machine, the eemhinati-eri vf'iih a retatahle stencil @vlinder if e.. eviee fer arresting the advance nl the u vliuder :it the efnnplelinn ef its revolution. and yielding means ler prrfeuting reenil it the ejflinder lrmn said arresting devine, :md menne; fur releasing the cylinder.

in a atene-ling machine l' e. feedimard, the c vtliimilien TSith L retatehle stencil cylinder, and :t pressure ruil enli-V Strueerl te fn-riprende to gage the leerling edges el' the paper sheeis, e lever piveted npnn the framezvnrk, and having :1 depressiiile erm extending te the leed-heard? n stop provided upm; the end of said lever, ehm-1n pim-ded upnii the stenel eglirder and having :i lng' or part te erlgege Said etnp tu arrest the advance el' the. cylihder at the eernple-Y et' its revnlutien. mid Step and lug being ehelale the lug te feree the step if the. rerreetien Qf the l. vliritlerg aid iste-pl El. la S 7emailing machine, tlaeemiihiiig limi with a retaable stencil vlinder2 ola at the eenlpletien nl' its revnlutiens a` y flelehl fel' hshlig Said K' l Step, and means ler silencing l'mth 'ef-aid rind said detelt. Y Y Y e 1G. ln n stenciling machine, the @millingteri ivth e ,rntntnlile steneil @flieder end a pt eure rnll, nl n deviee ier arretiug the ad" l ieldiiig step for arresting the advsmee nl' the @vlinderY flier; with u stencil e vlinder amel e pre* vanne of the cylinder et the cempletion ni its revelnlinn, ,inerme ter releaing said pressure rell and menne eehtreiled by seid rull-releaeM ing menne, fer sleneirlg said cylinder arresting' deviee.

1l. In sleneiling machine, the eerribiax tien avi th e, rtatehle steneil cylinder, nl :t deviee ler arresting the edvanee nl the cylinder et the enhpletien nl its revnhxtien, :t manufilly Gperehle devee 'for releasing said cylinder from Seid erresting device te permit the cylinder te malte another revoluties, and te be :1g-ain erregt-eil the emupletien thereof, und independently operable means ier Silencing said arresting; device.

l2. ln a Steneiling machine, the enmhina.- tien with aretetnlle stencil cylinder, of a device ler arresting the advance el' the Cylinder the eumpletion ol its revelutinn! a, immuallj; Operable device fur releasing Sayid cylineer from said arresting devise te permit the etvlinder in make :mother revlrrtierig and t0 he again arrested at the eempletieh thereof, independently operable means ier eilenririg eednerresting devieel, pr ure rell fer said evlinder, i lettering :roll

1S. In a etenciling machines the ennihinatien with n rutzitnliie Sterleil Cylinder, nl :l device l'nr arresting the rn'lvnee nl' the cylinder at the completion of its revolution, :L manually operable deviee for releasing: said eylin der l'rorn said arresting device tn permit the cylinder tu malte nnnther revolution. :1nd tn he again arrested at the eempletieiu thereef, indepehdentl'ltr operable menus fer silencing Suid arresting(leviee, n pressure rnll for seid evlinder7 means eemieeted with Said Sileneing: ineens im releaeihg Said preesnre ruilI yielding' detent ler hnlding' Said eylinder grinst :seid arreetihg (levier, and means vermeeied with Seid Sileneing menne for iniultahemiely allergne said detent,

14. in a etencilihg machine, the eenhihatien with 11 Stencil. eyli nder and n, pressi] re roll, ef rcel( Shaft havingT means l'or pressing Said rnll ageinst the Cylinder, e. latch fer holdin;r enh] veel; shall in @fleet-ive pneitimi, a lever having i1 step for arresting the cylinder, and also having mi arm extending; in said reel shelt, and n earn upon the rock Shall lirarfxv Said stop uut of effective pesilinn Seid roel( shaft is released frein Seid le permit' the cylinder te he rotzited penflently nl' said stop.

la a Steneiling maiehineVY the een'lhinaure roll, el a reel; slm'lt having menne ier pres ing; said Tell against the eylirnler, i latch im' helding il Teelt shaft in eiieetivepesitinn a. lever and means connected with said means im" releesieg Said pressure Y herring si step 'For afmeting the eylirirler, and

aise heving an arm extending to said reak Shaft, a een: einer. the reek Shaft te throw Said eut il eteetive pesitinn when said rock Shaft is released from Said lateh.7 to pernlit the cylinder to be rotated independently nl' seid step, a pivoted lever having at spring mid calmed by mid sprinlgr to held the ('ylinder yieldingl)T :Lgztinst said step, and also having :in arm extending tn said ruek Shaft, und it ealn upon the rnek shnl't t0 engage said arm and swing it to inefleetive positinn when the pressure roll is released.

1G. In a stenciling machine, the combina- 1e BUHNHAM (l. STCKNEY. Ti tnesses:

JUHN C. KOPF, KI'ITIE FRANKFURT. 

